Channel state information (CSI) report sending and receiving methods, devices and electronic devices

ABSTRACT

Provided are methods and devices for sending and receiving a channel state information (CSI) report, and electronic devices. The method for sending a CSI report includes that a terminal determines priorities of M CSI reports, where M is a natural number not less than 1; an available channel resource is selected from a channel resource set for receiving the M CSI reports, where the channel resource set includes J channel resources supporting reception of the M CSI reports and J is a natural number not less than 1; and at least one CSI report is transmitted according to the priorities by using the available channel resource.

CROSS-REFERENCES TO RELATED APPLICATION

This is a National stage application, filed under 37 U.S.C. 371, ofInternational Patent Application NO. PCT/CN2019/073873, filed on Jan.30, 2019, which is based on and claims priority to a Chinese patentapplication No. 201810150889.X filed at the CNIPA on Feb. 13, 2018,disclosure of which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to the field of communications and, forexample, relates to methods and devices for sending and receiving achannel state information (CSI) report, and electronic devices.

BACKGROUND

In multiple-input-multiple-output (MIMO) wireless communications, CSIfeedback is a key technique for implementing high-performancebeamforming and precoding. In a wireless communication system, CSI istransmitted in an uplink channel. The uplink channel includes a physicaluplink control channel (PUCCH) or a physical uplink shared channel(PUSCH). Generally, if there are multiple CSI reports to be reported,the terminal transmits different CSI reports on corresponding uplinkchannel resources; and if there is collision between two or more uplinkchannel resources, it is necessary to solve the problem of how to reportcorresponding CSI.

SUMMARY

The present disclosure provides methods and devices for sending andreceiving a CSI report, and electronic devices, so as to overcome thedifficulty in related art that there is no solution for reporting CSIreports if collision exists between uplink channel resources.

The present disclosure provides a method for sending a CSI report. Themethod includes that a terminal determines priorities of M CSI reports,where M is a natural number not less than 1; an available channelresource is selected from a channel resource set for transmitting the MCSI reports, where the channel resource set includes J channel resourcessupporting transmission of the M CSI reports and J is a natural numbernot less than 1; and the CSI reports are transmitted according to thepriorities by using the available channel resource.

A method for receiving a CSI report is further provided. The methodincludes that a base station determines priorities of M CSI reports,where M is a natural number not less than 1; an available channelresource is selected from a channel resource set for receiving the M CSIreports, where the channel resource set includes J channel resourcessupporting reception of the M CSI reports and J is a natural number notless than 1; and at least one CSI report is received according to thepriorities by using the available channel resource.

A method for determining a QCL parameter is further provided. The methodincludes determining whether configuration information satisfies apredetermined constraint condition, and determining an acquisition modeof a QCL parameter of a signal according to a determination result; ordetermining the acquisition mode of the QCL parameter of the signalaccording to signaling information.

A method for determining a QCL parameter of an aperiodic measurementreference signal is further provided. The method includes the stepdescribed below.

The quasi-co-location (QCL) parameter of the aperiodic measurementreference signal is determined according to physical-layer dynamiccontrol signaling. The physical-layer dynamic control signaling includesconfiguration information about the QCL parameter of the aperiodicmeasurement reference signal.

A method for transmitting a reference signal is further provided. Themethod includes the steps described below.

A sequence parameter associated with the reference signal is determined,where the sequence parameter is used for generating a sequence, and thesequence parameter hops once every X time domain symbols, where X is aninteger greater than or equal to 1. The reference signal is determinedaccording to the determined sequence parameter. The reference signal istransmitted.

A device for sending a CSI report is further provided. The device isapplied to a terminal and includes a determination module, a selectionmodule and a transmission module. The determination module is configuredto determine priorities of M CSI reports, where M is a natural numbernot less than 1. The selection module is configured to select anavailable channel resource from a channel resource set for transmittingthe M CSI reports, where the channel resource set includes J channelresources supporting transmission of the M CSI reports and J is anatural number not less than 1. The transmission module is configured totransmit at least one CSI report according to the priorities by usingthe available channel resource.

A device for receiving a CSI report is further provided. The device isapplied to a base station and includes a determination module, aselection module and a transmission module. The determination module isconfigured to determine priorities of M CSI reports, where M is anatural number not less than 1. The selection module is configured toselect an available channel resource from a channel resource set forreceiving the M CSI reports, where the channel resource set includes Jchannel resources supporting reception of the M CSI reports and J is anatural number not less than 1. The transmission module is configured toreceive at least one CSI report according to the priorities by using theavailable channel resource.

A device for determining a QCL parameter is further provided. The deviceincludes a determination module or a second determination module. Thedetermination module is configured to determine whether configurationinformation satisfies a predetermined constraint condition, anddetermine an acquisition mode of a QCL parameter of a signal accordingto a determination result. The second determination module is configuredto determine the acquisition mode of the QCL parameter of the signalaccording to signaling information.

A device for determining a QCL parameter is further provided. The deviceincludes a determination module.

The determination module is configured to determine a quasi-co-location(QCL) parameter of an aperiodic measurement reference signal accordingto physical-layer dynamic control signaling, where the physical-layerdynamic control signaling includes configuration information about theQCL parameter of the aperiodic measurement reference signal.

A terminal device is further provided. The terminal device includes aprocessor and a communication module. The processor is configured toselect an available channel resource from a channel resource set fortransmitting M CSI reports, where the channel resource set includes Jchannel resources supporting transmission of the M CSI reports and J isa natural number not less than 1. The communication module is configuredto transmit at least one CSI report according to priorities of the M CSIreports by using the available channel resource.

A base station is further provided. The base station includes aprocessor and a communication module. The processor is configured todetermine priorities of M CSI reports, where M is a natural number notless than 1, and select an available channel resource from a channelresource set for receiving the M CSI reports, where the channel resourceset includes J channel resources supporting reception of the M CSIreports and J is a natural number not less than 1. The communicationmodule is configured to receive at least one CSI report according to thepriorities by using the available channel resource.

An electronic device is further provided. The electronic device includesa memory and a processor. The memory stores computer programs. Theprocessor is configured to execute the computer programs to perform anymethod for sending a CSI report described above.

An electronic device is further provided. The electronic device includesa memory and a processor. The memory stores computer programs. Theprocessor is configured to execute the computer programs to perform anymethod for receiving a CSI report described above.

A storage medium is further provided. The storage medium is configuredto store computer programs. The computer programs are configured to,when executed, perform the steps of any method embodiment describedabove.

An electronic device is further provided. The electronic device includesa memory and a processor. The memory stores computer programs. Theprocessor is configured to execute the computer programs to perform thesteps of any method embodiment described above.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a structure block diagram of a terminal device according to anembodiment of the present disclosure;

FIG. 2 is a flowchart of a method for sending a CSI report according toan embodiment of the present disclosure;

FIG. 3 is a structure block diagram of a device for sending a CSI reportaccording to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of example 1 of resource mergence and DMRSlocations according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of example 2 of resource mergence and DMRSlocations according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of frequency domain segments of a DMRS andresources according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of an example for processing a DMRS inchannel resource mergence according to an embodiment of the presentdisclosure;

FIG. 8 is a schematic diagram of an example of channel resource mergenceaccording to an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of another example of channel resourcemergence according to an embodiment of the present disclosure;

FIG. 10 is a flowchart of a method for receiving a CSI report accordingto an embodiment of the present disclosure;

FIG. 11 is a structure block diagram of a device for receiving a CSIreport according to an embodiment of the present disclosure;

FIG. 12 is a flowchart of a method for determining a QCL parameteraccording to an embodiment of the present disclosure;

FIG. 13 is a flowchart of a method for determining a QCL parameter of anaperiodic measurement reference signal according to an embodiment of thepresent disclosure;

FIG. 14 is a schematic diagram of positions of CORESETs in a slotaccording to an embodiment of the present disclosure;

FIG. 15 is a flowchart of a method for determining a sequence parameteraccording to an embodiment of the present disclosure;

FIG. 16 is a schematic diagram of a hopping pattern of a sequence groupnumber or a sequence number according to an embodiment of the presentdisclosure;

FIG. 17 is a schematic diagram of another hopping pattern of a sequencegroup number or a sequence number according to an embodiment of thepresent disclosure; and

FIG. 18 is another schematic diagram of time domain symbols occupied bya demodulation reference signal in a slot according to an embodiment ofthe present disclosure.

DETAILED DESCRIPTION

The present disclosure is described hereinafter in detail with referenceto the drawings and in conjunction with embodiments.

It is to be noted that the terms “first”, “second” and the like in thedescription, claims and drawings of the present disclosure are used todistinguish between similar objects and are not necessarily used todescribe a particular order or sequence.

In the embodiments of the present disclosure, transmission configurationindicator (TCI) information is used for indicating a quasi-co-location(QCL) relationship between a DMRS group/CSI-RS port group and a DL-RSset. That is, each piece of TCI index information corresponds to arespective state, each state includes correspondences between Q DMRSgroups and Q DL-RS sets, each DL-RS set includes one or more downlink-reference signals (DL-RSs), and each DL-RS is associated with a QCLparameter set, indicating that a reference signal in the DMRSgroup/CSI-RS port group and a DL-RS in the DL-RS set associated with theDMRS group/CSI-RS port group satisfy a QCL relationship with respect tothe QCL parameter set. The case where two reference signals satisfy aquasi-co-location relationship with respect to a QCL parameter indicatesthat the QCL parameter of a reference signal may be acquired through theQCL parameters of the two reference signals. The QCL parameter includesat least one of a Doppler shift, a Doppler spread, an average delay, adelay spread, an average gain or a spatial Rx parameter.

Embodiment One

A method embodiment provided by embodiment one of the present disclosuremay be executed in a mobile terminal, a computer terminal or othersimilar computing devices. Using the method embodiment to be executed inthe mobile terminal as an example, FIG. 1 is a structure block diagramof hardware of a mobile terminal for a method for sending a CSI reportaccording to an embodiment of the present disclosure. As shown in FIG.1, a mobile terminal 10 may include one or more (only one is shown inFIG. 1) processors 102 (where the processor 102 may include, but is notlimited to, a microcontroller unit (MCU), a field programmable gatearray (FPGA) or another processing device), a memory 104 for storingdata, and a transmission device 106 for implementing a communicationfunction. It is to be understood by those skilled in the art that thestructure shown in FIG. 1 is merely illustrative, and not intended tolimit the structure of the electronic device described above. Forexample, the mobile terminal 10 may further include more or fewercomponents than the components shown in FIG. 1, or may have aconfiguration different from the configuration shown in FIG. 1.

The memory 104 may be configured to store computer programs (such assoftware programs and modules of application software), for example,computer programs corresponding to the method in the embodiment of thepresent disclosure. The processors 102 execute the computer programsstored in the memory 104 to perform various functional applications anddata processing, that is, to perform the preceding method. The memory104 may include a high-speed random access memory, or may furtherinclude a nonvolatile memory, such as one or more magnetic storagedevices, flash memories or other nonvolatile solid-state memories. Insome examples, the memory 104 may further include memories that areremotely disposed with respect to the processors 102. These remotememories may be connected to the mobile terminal 10 via a network.Examples of the preceding network include, but are not limited to, theInternet, an intranet, a local area network, a mobile communicationnetwork and a combination thereof.

The transmission device 106 is configured to receive or send data via anetwork. Specific examples of the preceding network may include awireless network provided by a communication provider of the mobileterminal 10. In an embodiment, the transmission device 106 includes anetwork interface controller (NIC). The NIC may be connected to othernetwork equipment via a base station and thus communicate with theInternet. In an example, the transmission device 106 may be a radiofrequency (RF) module, which is configured to communicate with theInternet in a wireless way.

This embodiment provides a method for sending a CSI report. The methodis executed in the preceding mobile terminal. FIG. 2 is a flowchart ofthe method for sending a CSI report according to the embodiment of thepresent disclosure. As shown in FIG. 2, the method includes steps S202,S204 and S206 described below.

In step S202, a terminal determines priorities of M CSI reports, where Mis a natural number not less than 1.

In step S204, an available channel resource is selected from a channelresource set for transmitting the M CSI reports.

The channel resource set includes J channel resources supportingtransmission of the M CSI reports. J is a natural number not less than1.

In step S206, at least one CSI report is transmitted according to thepriorities of the M CSI reports by using the available channel resource.

Step S204 may be performed by: selecting one channel resource from thechannel resource set as the available channel resource; or selectingmultiple channel resources from the channel resource set to merge themultiple channel resources into a new channel resource, and using thenew channel resource to send the CSI report. Details are described blow.

As an exemplary embodiment of the present disclosure, step S204 may beperformed by selecting one channel resource from the J channel resourcesas the available channel resource.

For example, a channel resource occupying a minimum number of resourceelements (REs) in an optional channel resource set is used as theavailable channel resource. The optional channel resource set is asubset of the channel resource set.

In an embodiment, the channel resource occupying the minimum number ofREs in the optional channel resource set may be used as the availablechannel resource according to the following condition: a total overheadof the M CSI reports is less than the maximum number of transmittablebits of any channel resource in the optional channel resource set.

For example, a channel resource R corresponding to the maximum one amongmaximum numbers of transmittable bits in the channel resource set isselected as the available channel resource.

In an embodiment, the channel resource R is selected as the availablechannel resource according to the following condition: a total overheadof the M CSI reports is not less than the maximum one among maximumnumbers of transmittable bits in the channel resource set.

For another example, if the M CSI reports are sequenced according to thepriorities, from high to low, of the M CSI reports, then first K CSIreports are transmitted based on determining that a total overhead ofthe first K CSI reports is less than or equal to the maximum number Otof transmittable bits of the one channel resource and a total overheadof first K+1 CSI reports is greater than Ot. K is a natural number notgreater than M.

In an embodiment, before the channel resource occupying a minimum numberof REs in the optional channel resource set is used as the availablechannel resource, the following operation may be repeated until thetotal overhead of the M CSI reports is less than the maximum number oftransmittable bits of any channel resource in the optional channelresource set: removing a channel resource whose maximum number oftransmittable bits is minimum in the optional channel resource set basedon determining that a channel resource whose maximum number oftransmittable bits is less than the total overhead of the M CSI reportsexists in the optional channel resource set.

In an embodiment, the maximum number of transmittable bits of the onechannel resource is determined according to a maximum transmission coderate and the number of occupied REs.

In an embodiment, the maximum number of transmittable bits satisfies atleast one of the following conditions: the maximum number oftransmittable bits is equal to a difference value between the number ofcyclic redundancy check (CRC) bits and a product of the maximumtransmission code rate and the number of occupied REs, or the maximumnumber of transmittable bits is proportional to the product of themaximum transmission code rate and the number of occupied REs.

As another application embodiment, step S204 may further be performedsuch that: the terminal selects L channel resources from the J channelresources to merge the L channel resources into a new channel resource,and the new channel resource is used as the available channel resource.An RE set contained in the new channel resource is a union set of REsets corresponding to the L channel resources, or a subset of the unionset.

For example, L0 channel resources are selected from the J channelresources, and the L0 channel resources are used as the availablechannel resource. The at least one CSI report is transmitted on a unionset of RE sets corresponding to the L0 channel resources and at amaximum code rate which is the minimum one among maximum code ratescorresponding to the L0 channel resources by using the available channelresource. L0 is a natural number not greater than J.

In an embodiment, the L0 channel resources are selected from the Jchannel resources in at least one of the following manners: the M CSIreports can be transmitted completely in response to transmitting theCSI on the union set of RE sets corresponding to the L0 channelresources and at the maximum code rate which is the minimum one amongthe maximum code rates corresponding to the L0 channel resources; theunion set of RE sets corresponding to the L0 channel resources occupiesa minimum number of REs; the maximum number of transmittable bits ismaximum in the transmission on the union set of RE sets corresponding tothe L0 channel resources and at the maximum code rate which is theminimum one among the maximum code rates corresponding to the L0 channelresources; or one of time domain symbols or time domain symbol groupsoccupied by the L0 channel resources are different from each other.

In an embodiment, the CSI reports are transmitted such that all the MCSI reports are transmitted.

Alternatively, the CSI reports are transmitted such that: if the maximumnumber of transmittable bits is O0 in the transmission on the union setof RE sets corresponding to the L0 channel resources and at the maximumcode rate which is the minimum one among the maximum code ratescorresponding to the L0 channel resources, then the M CSI reports aresequenced according to the priorities, from high to low, of the M CSIreports, and first K CSI reports are transmitted based on determiningthat the total overhead of the first K CSI reports is less than or equalto O0 and the total overhead of first K+1 CSI reports is greater thanO0, where 1≤K≤M.

As another application embodiment, L1 channel resources are selectedfrom the J channel resources as the available channel resource, where anRE contained in a channel resource is selected on each time domainsymbol contained in RE sets occupied by the L1 channel resources to forma first RE set, and the CSI reports are transmitted on the first RE setat a maximum code rate which is the minimum one among maximum code ratescorresponding to the selected channel resources.

For another example, an RE contained in a channel resource having amaximum number of physical resource blocks (PRB) is selected on eachtime domain symbol to obtain the first RE set.

In an embodiment, the M CSI reports can be transmitted completely inresponse to transmitting the at least one CSI report on the first RE setat the maximum code rate which is the minimum one among maximum coderates corresponding to the L1 resources, the first RE set occupies aminimum number of REs, or the maximum number of transmittable bits ismaximum in the transmission on the first RE set at the maximum code ratewhich is the minimum one among maximum code rates corresponding to theselected channel resources.

In another application embodiment, if the maximum number oftransmittable bits is O1 in the transmission on the first RE at themaximum code rate which is the minimum one among maximum code ratescorresponding to the selected channel resources, the M CSI reports aresequenced according to the priorities, from high to low, of the M CSIreports, and first K CSI reports are transmitted based on determiningthat a total overhead of the first K CSI reports is less than or equalto O1 and a total overhead of first K+1 CSI reports is greater than O1,where 1≤K≤M.

In an embodiment, the maximum number of transmittable bits of the newchannel resource is determined according to a maximum transmission coderate and the number of occupied REs.

In an embodiment, the maximum number of transmittable bits satisfies atleast one of the following conditions: the maximum number oftransmittable bits is equal to a difference value between the number ofcyclic redundancy check (CRC) bits and a product of the maximumtransmission code rate and the number of occupied REs, or the maximumnumber of transmittable bits is proportional to the product of themaximum transmission code rate and the number of occupied REs.

As another exemplary example, an application scenario of this embodimentmay be that collision exists between channel resources. That is, beforestep S202, it is determined that collision exists between at least twochannel resources in the channel resource set, where the collision meansthat the at least two channel resources contain at least one of the sametime domain symbol or the same frequency domain subcarrier.

In an embodiment, the J channel resources are within the same slot.

In an embodiment, steps S202 and S204 may be executed in a reverseorder, that is, step S204 may be executed before step S202.

Through this embodiment of the present disclosure, CSI reports aretransmitted according to priorities of CSI reports by using selectedchannel resources. This can avoid a problem that the CSI reports cannotbe reported due to channel resource collision, thereby improving thetransmission efficiency of CSI feedback or improving the utilizationratio of uplink channel resources.

According to the description of the embodiment described above, it isapparent to those skilled in the art that the method in the embodimentdescribed above may be implemented by software plus a necessarygeneral-purpose hardware platform, or may of course be implemented byhardware. However, in many cases, the former is a preferredimplementation mode. Based on this understanding, the technical solutionof the present disclosure substantially, or the part contributing to therelated art, may be embodied in the form of a software product. Thecomputer software product is stored in a storage medium (such as aread-only memory (ROM)/random access memory (RAM), a magnetic disk or anoptical disk) and includes several instructions for enabling a terminaldevice (which may be a mobile phone, a computer, a server, a networkdevice or the like) to perform the method according to each embodimentof the present disclosure.

Embodiment Two

This embodiment further provides a device for sending a CSI report. Thedevice is configured to implement the embodiment and applicationimplementation mode described above. What has been described is notrepeated. As used below, the term “module” may be at least one ofsoftware, hardware or a combination thereof that can implementpredetermined functions. The device in the embodiment described below ispreferably implemented by software, but implementation by hardware or bya combination of software and hardware is also possible and conceivable.

FIG. 3 is a structure block diagram of the device for sending a CSIreport according to the embodiment of the present disclosure. The devicefor sending a CSI report is applied to a terminal. As shown in FIG. 3,the device includes a determination module 30, a selection module 32 anda transmission module 34.

The determination module 30 is configured to determine priorities of MCSI reports, where M is a natural number not less than 1.

The selection module 32 is configured to select an available channelresource from a channel resource set for transmitting the M CSI reports.The channel resource set includes J channel resources supportingtransmission of the M CSI reports. J is a natural number not less than1.

The transmission module 34 is configured to transmit the CSI reportsaccording to the priorities by using the available channel resource.

In an embodiment, the determination module 30 is further configured suchthat collision exists between at least two channel resources in thechannel resource set. The collision means that the at least two channelresources contain at least one of the same time domain symbol or thesame frequency domain subcarrier.

It is to be noted that the preceding modules may be implemented bysoftware or hardware.

Implementation by hardware may, but not necessarily, be performed in thefollowing manner: the preceding modules are located in the sameprocessor or the preceding modules are located in any combination intheir respective processors.

The related solutions in embodiment one and embodiment two are describedin detail below in conjunction with examples 3 to 6.

Embodiment Three

This embodiment gives an example for implementing CSI feedback. Duringthe CSI feedback, a terminal transmits a CSI report on an uplink channelresource corresponding to the CSI report. The uplink channel resourcemay be a physical uplink control channel (PUCCH) resource or a physicaluplink shared channel (PUSCH) resource. If there are multiple CSIreports, the terminal transmits each CSI report on a respective uplinkchannel resource corresponding to the each CSI report. In response tocollision existing between at least two channel resources in a slot, theterminal cannot transmit each CSI report on the respective uplinkchannel resource. The collision means that the at least two channelresources contain at least one of the same time domain symbol or thesame frequency domain subcarrier.

For example, in one slot, the terminal is configured with J (J≥2)channel resources for reporting the CSI, and collision exists between atleast two channel resources in the J channel resources. A base stationconfigures corresponding transmission mode information, which includesmaximum code rate information, for the J channel resources. For example,in the J channel resources, the maximum transmission code rate of thej-th channel resource Rj is Cj, the number of REs occupied by the j-thchannel resource is Nj, and the set of the occupied REs is REj, then themaximum number of transmittable bits of the j-th channel resource is Oj,where Oj may be calculated from Cj and Nj. For example, Oj isproportional to CjNj (O_(j)∝C_(j)N_(j)). In the case where the collisionexists between the at least two channel resources in the slot, theterminal may transmit the CSI reports in at least one of the mannersdescribed below.

Manner 1: The terminal determines priorities of CSI reports to betransmitted. For example, there are M (M≥1) CSI reports to betransmitted, and the M CSI reports are sequenced as P1, P2, . . . , PMaccording to priorities of the M CSI reports from high to low. Onechannel resource is selected from J channel resources. CSI reports arereported as many as possible on the one channel resource according tothe priorities from high to low. Exemplarily, the specific methodincludes steps 0 to 2 described below.

In step 0, an optional channel resource set is {R1, . . . , RJ}.

In step 1, if a total overhead of the M CSI reports P1, P2, . . . and PMis less than the maximum number of transmittable bits of any channelresource in the optional channel resource set, then at least one CSIreport is transmitted on a channel resource that occupies a minimumnumber of REs in the optional channel resource set; if there is achannel resource whose maximum number of transmittable bits is less thanor equal to the total overhead of the M CSI reports in the optionalchannel resource set, a channel resource whose maximum numbers oftransmittable bits is minimum is removed from the optional channelresource set, and step 1 is continued.

In step 2, if the total overhead of the M CSI reports P1, P2, . . . andPM is not less than a maximum number of transmittable bits of a channelresource whose maximum number of transmittable bits is maximum in {R1, .. . , RJ}, then the channel resource whose maximum number oftransmittable bits is maximum is selected to report K CSI reports amongthe M CSI reports. For example, for the channel resource Rt whosemaximum number of transmittable bits is maximum, if K satisfies that atotal overhead of CSI {P1, . . . , PK} is less than or equal to Ot and atotal overhead of CSI {P1, . . . , PK+1} is greater than Ot, then CSI{P1, . . . , PK} are transmitted on this channel resource Rt.

Manner 2: The terminal determines priorities of CSI reports to betransmitted. For example, there are M (M≥1) CSI reports to betransmitted and the M CSI reports are sequenced as P1, P2, . . . and PMaccording to priorities of the M CSI reports from high to low. One ormore channel resources are selected from the J channel resources. CSIreports are reported as many as possible on the one or more channelresources according to the priorities from high to low. The specificmethod includes steps A and B described below.

In step A, L0 channel resources are selected from {R1, . . . , RJ}, andif the M CSI reports can be transmitted completely and a minimum numberof REs is occupied in response to transmitting the CSI reports on REscontained in a new channel resource merged by the L0 resources (that is,a union set of the L0 RE sets) and at a code rate which is the minimumone among maximum code rates corresponding to the L0 resources, then theL0 channel resources are selected to transmit the at least one CSIreport at the code rate which is the minimum one among the maximum coderates corresponding to the L0 resources. For example, if

{L, R_(i₁,)…, R_(i_(L))}({L, R_(i₁,)…, R_(i_(L))} = {L₀, R_(j₁), …, R_(j_(L₀))})satisfies that the M CSI reports can be transmitted completely onU_(l=1) ^(L) ⁰ RE_(j) ₁ at a code rate of

$\min\{ {C_{j_{1}},\ldots,C_{{j_{L}}_{0}}} \}{and}\min_{L,{R_{i_{1},\ldots,}R_{i_{L}}}}{N( {\bigcup_{l = 1}^{L}{RE_{i_{1}}}} )}$is achieved, then the CSI reports are transmitted on U_(l=1) ^(L) ⁰RE_(j) ₁ at

min {C_(j₁), …, C_(j_(L₀))},where 1≤L≤J, i_(l)∈{1, . . . , J}, U_(l=1) ^(L)RE_(i) ₁ denotes theunion set of the L RE sets, and N(U_(l=1) ^(L)RE_(i) ₁ ) denotes thenumber of REs contained in the union set.

In step B, if the L0 resource channels satisfying the conditions cannotbe found in step A, then L1 channel resources are selected from {R1, . .. , RJ} so that the maximum number of transmittable bits is maximum inresponse to transmitting the CSI reports on REs contained in a newchannel resource merged by the L0 resources (that is, a union set of theL0 RE sets) at a code rate which is the minimum one among maximum coderates corresponding to the L1 resources, and K CSI reports among the MCSI reports are reported. For example, in response to transmitting theCSI reports on the mergence channel resource at the code rate which isthe minimum one among maximum code rates corresponding to the L1resources, if K satisfies that a total overhead of CSI{P1, . . . , PK}is less than or equal to the maximum number O0 of transmittable bitsafter the mergence and a total overhead of CSI{P1, . . . , PK+1} isgreater than O0, then CSI{P1, . . . , PK} is transmitted on the mergencechannel resource at the code rate which is the minimum one among maximumcode rates corresponding to the L1 resources. For example,

{L, R_(i₁,)…, R_(i_(L))}({L, R_(i₁,)…, R_(i_(L))} = {L₁, R_(k₁), …, R_(k_(L₁))})satisfies:

${\max_{L,{R_{i_{1},}\ldots},R_{i_{L}}}{O( {\bigcup\limits_{l = 1}^{L}{RE}_{i_{1}}} )}},$where O(U_(l=1) ^(L)RE_(i) ₁ ) denotes the maximum number oftransmittable bits on U_(l=1) ^(L)RE_(i) ₁ at min{C_(i) ₁ , . . . ,C_(i) _(L) }, that is, O(U_(l=1) ^(L)RE_(i) ₁ )∝N(U_(l=1) ^(L)RE_(i) ₁)·min{C_(i) ₁ , . . . , C_(i) _(L) }; if K satisfies that a totaloverhead of CSI{P1, . . . , PK} is less than or equal to the maximumnumber O(U_(l=1) ^(L)RE_(k) ₁ ) of transmittable bits after the mergenceand a total overhead of CSI{P1, . . . , PK+1} is greater than O(U_(l=1)^(L) ¹ RE_(k) ₁ ), then CSI{P1, . . . , PK} is transmitted on U_(l=1)^(L) ¹ RE_(k) ₁ at

min {C_(k₁), …, C_(k_(L₁))}.

In the preceding manner 1 or manner 2, if the corresponding maximumnumbers of bits are the same or the minimum numbers of REs are the same,then a channel resource having a lower resource ID is selected.

In the preceding manner 2, the channel resource selected for themergence may be at least one of a periodic channel resource, asemi-persistent channel resource or an aperiodic channel resource.

Embodiment Four

This embodiment provides an application implementation mode forprocessing a demodulation reference signal (DMRS) corresponding to achannel resource in the selection of the channel resource in CSIfeedback. In embodiment three, for manner 2, if there are multiplechannel resources for transmitting and reporting CSI in a slot andcollision exists between at least two channel resources, multiplechannel resources may be selected and merged into a new channel resourcefor transmitting the CSI. During the channel resource mergence, ifmultiple channel resources partially overlap in the frequency domain, itis necessary to solve the problem of how to process DMRSs correspondingto these channel resources. At least one of the manners described belowmay be used to solve the preceding problem.

In manner A1, positions of time domain symbols of a DMRS are determined.On a set of time domain symbols occupied by a mergence channel resource,one time domain symbol of the DMRS is contained every T time domainsymbols. For example, the time domain symbols of the DMRS are located onthe T-th, 2T-th, 3T-th and other time domain symbols. The value of T maybe fixed, for example, T=3, or determined by a configuration ofhigher-layer signaling, or determined according to the maximum value orthe minimum value of the time domain density of the DMRS of channelresources before the mergence. As shown in FIG. 4, time domain symbolsof the DMRS are placed at fixed symbol intervals in a mergence timedomain area of resource 1 and resource 2.

In manner A2, positions of time domain symbols of a DMRS are determined.A mergence channel resource includes L channel resources before themergence, and time domain symbols of the DMRS after the mergence arelocated on a union set of time domain symbols of DMRSs of the Lresources. As shown in FIG. 5, in a mergence time domain area ofresource 1 and resource 2, DMRS symbols of the mergence resource includea union of a DMRS symbol set of resource 1 and a DMRS symbol set ofresource 2.

In manner B1, a frequency domain structure of a DMRS is determined.According to the positions of time domain symbols of the DMRS determinedin manner A1 or manner A2, if the mergence channel resource contains Fsubcarriers at these positions, then a DMR sequence having a frequencydomain length of F is generated and mapped on F subcarrierscorresponding to the time domain positions. As shown in FIG. 4 or FIG.5, on corresponding areas of the DMRS symbols, the DMRS having thecorresponding length is generated according to the number of subcarrierscontained in corresponding symbols of the mergence channel resource, andthe DMRS is mapped to corresponding frequency domain areas.

In manner B2, a frequency domain structure of a DMRS is determined. Thisstep is performed by segmentation and cascade of DMRSs in frequencydomain. For example, for channel resources partially overlapping in thefrequency domain, the mergence channel resource is divided into Tsegments in the frequency domain according to overlapping parts, and thelength of the t-th segment is St. T DMRS sequences are generated at thetime domain positions determined in manner A1 or manner A2, and thelength of the t-th DMRS sequence is St. As shown in FIG. 6, the DMRS ofthe mergence resource are formed by three DMRS segments generated in anarea belonging to only resource 1, an area belonging to only resource 2,and an overlapping area, and the DMRS on the whole symbol is cascaded ofthe three DMRS segments.

In manner B3, priorities of channel resources before the mergence arespecified, where the priorities may be determined by at least one of:determining according to a channel format (for example, more orthogonalfrequency division multiplexing (OFDM) symbols a resource contains, thehigher priority the resource has), selecting according to the Identity(ID) of the channel resource (for example, a resource with the lowest orhighest ID has a higher priority), and selecting according to thecorresponding code rate (for example, a resource with the lowest orhighest code rate has a higher priority); a DMRS of a channel resourcewith a higher priority is still generated in the way before themergence; an overlapping part of a DMRS of a channel resource with alower priority is removed, and the number of occupied physical resourceblocks (PRBs), subcarriers or OFDM symbols is reduced. That is, at leastone of the length or the time domain density of the DMRS is generatedaccording to the conditions after the removal. A specific example isshown in FIG. 7. If channel resource 1 has a higher priority, PRB1 ofchannel resource 2 is removed and a DMRS of channel resource 2 isgenerated according to the length of a PRB.

Embodiment Five

This embodiment gives an application implementation mode for selecting achannel resource in CSI feedback. In embodiment three, manner 2 includesa method of merging multiple channel resources and transmitting CSI on amergence channel resource. It is necessary to make some improvements ifa terminal is limited to transmit only one channel resource on the sametime domain symbol.

In a slot, the terminal is configured with J (J≥2) channel resources forreporting the CSI, and collision exists between at least two channelresources among the J channel resources. A base station configurescorresponding transmission mode information, including maximum code rateinformation, for the J channel resources. For example, in the J channelresources, the maximum transmission code rate of the j-th channelresource Rj is Cj, the number of REs occupied by the j-th channelresource is Nj, and the set of the occupied REs is REj, then the maximumnumber of transmittable bits of the j-th channel resource is Oj, whereOj may be calculated from Cj and Nj. For example, O_(j)∝c_(j)N_(j). Inthe case where the collision exists between the at least two channelresources in the slot, the terminal may transmit CSI reports in at leastone of the manners described below.

Manner I: The terminal determines priorities of CSI reports to betransmitted. For example, there are M (M≥1) CSI reports to betransmitted, and the M CSI reports are sequenced as P1, P2, . . . and PMaccording to priorities of the M CSI reports from high to low. One ormore channel resources are selected from the J channel resources. CSIreports are reported as many as possible on the one or more channelresources according to the priorities from high to low. The specificmethod includes steps I-A and I-B described below.

In step I-A, L0 channel resources are selected from {R1, . . . , RJ},where the L0 channel resources are located at different time domainsymbols or different time domain symbol groups, that is, the L0 channelresources do not contain the same time symbol; as show in FIG. 8, if theM CSI reports can be transmitted completely and a minimum number of REsis occupied in response to transmitting the CSI reports on REs containedin a new channel resource merged by the L0 resources (that is, a unionset of the L0 RE sets) at a code rate which is the minimum one amongmaximum code rates corresponding to the L0 resources, then the L0channel resources are selected to transmit the CSI reports at a coderate which the minimum one among maximum code rates corresponding to theL0 resources. For example, if

{L, R_(i₁,)…, R_(i_(L))}({L, R_(i₁,)…, R_(i_(L))} = {L₀, R_(j₁), …, R_(j_(L₀))})satisfies that resources in

{R_(j₁), …, R_(j_(L₀))}do not contain the same time symbol, and the M CSI reports can betransmitted completely on U_(l=1) ^(L) ⁰ RE_(j) ₁ at a code rate of

min {C_(j₁), …, C_(j_(L)₀)}so that

${\min\underset{L,{R_{i_{1},}\ldots},R_{i_{L}}}{}{N( {\underset{l = 1}{\bigcup\limits^{L}}{RE}_{i_{1}}} )}},$then the CSI reports are transmitted on U_(l=1) ^(L) ⁰ RE_(j) ₁ at

min {C_(j₁), …, C_(j_(L₀))},where 1≤L≤J, i_(l)∈{1, . . . , J}, U_(l=1) ^(L)RE_(i) ₁ denotes a unionset of L RE sets, and N(U_(l=1) ^(L)RE_(i) ₁ ) denotes the number of REscontained in the union set.

In step I-B, if the L0 resource channels satisfying the conditionscannot be found in step I-A, then L1 channel resources are selected from{R1, . . . , RJ}, where the L1 channel resources are located atdifferent time domain symbols or different time domain symbol groups,that is, the L1 channel resources do not contain the same time domainsymbol, so that the maximum number of transmittable bits is maximum inresponse to transmitting the CSI reports on REs contained in a newchannel resource merged by the L1 resources (that is, a union set of theL1 RE sets) and at a code rate which is the minimum one among maximumcode rates corresponding to the L1 resources, and K CSI reports amongthe M CSI reports are reported. For example, in response to transmittingthe CSI reports on the mergence channel resource at the code rate whichis the minimum one among maximum code rates corresponding to the L1resources, if K satisfies that a total overhead of CSI{P1, . . . , PK}is less than or equal to the maximum number O0 of transmittable bitsafter the mergence and a total overhead of CSI{P1, . . . , PK+1} isgreater than O0, then CSI{P1, . . . , PK} are transmitted on themergence channel resource at the code rate which is the minimum oneamong maximum code rates corresponding to the L1 resources. For example,

{L, R_(i₁,)…, R_(i_(L))}({L, R_(i₁,)…, R_(i_(L))} = {L₁, R_(k₁), …, R_(k_(L₁))})satisfies that resources in {L, R_(i) ₁ , . . . , R_(i) _(L) } do notcontain the same time domain symbol or the same time domain symbol groupso that

${\max\underset{L,{R_{i_{1},}\ldots},R_{i_{L}}}{}{O( {\underset{l = 1}{\bigcup\limits^{L}}{RE}_{i_{1}}} )}},$where O(U_(l=1) ^(L)RE_(i) ₁ ) denotes the maximum number oftransmittable bits of U_(l=1) ^(L)RE_(i) ₁ at min{C_(i) ₁ , . . . ,C_(i) _(L) }, that is, O(U_(l=1) ^(L)RE_(i) ₁ )∝N(U_(l=1) ^(L)RE_(i) ₁)·min{C_(i) ₁ , . . . , C_(i) _(L) }; if K satisfies that a totaloverhead of CSI{P1, . . . , PK} is less than or equal to the maximumnumber O(U_(l=1) ^(L) ¹ RE_(k) ₁ ) of transmittable bits after themergence and a total overhead of CSI{P1, . . . , PK+1} is greater thanO(U_(l=1) ^(L) ¹ RE_(k) ₁ ), then CSI{P1, . . . , PK} are transmitted onU_(l=1) ^(L) ¹ RE_(k) ₁ at

min {C_(k₁), …, C_(k_(L₁))}.

Manner II: The terminal determines priorities of CSI reports to betransmitted, for example, there are M (M≥1) CSI reports to betransmitted and the M CSI reports are sequenced as P1, P2, . . . and PMaccording to priorities of the M CSI reports from high to low. One ormore channel resources are selected from the J channel resources, andCSI reports are reported as many as possible on the one or more channelresources according to the priorities from high to low. The specificmethod includes steps II-A and II-B described below.

In step II-A, L0 channel resources are selected from {R1, . . . , RJ}and merged into a new channel resource, where an RE contained in onechannel resource is selected on each time domain symbol contained in LRE sets (for example, an RE contained in a channel resource having amaximum PRBs is selected on each time domain symbol) to form an RE setcontained in the new channel resource; as show in FIG. 9, if the M CSIreports can be transmitted completely and a minimum number of REs isoccupied in response to transmitting the CSI reports at a code ratewhich is the minimum one among maximum code rates corresponding to theselected resources, then the L0 channel resources are selected totransmit the CSI at the code rate which is the minimum one among maximumcode rates corresponding to the L0 resources. For example,

{L, R_(i₁,)…, R_(i_(L))}({L, R_(i₁,)…, R_(i_(L))} = {L₀, R_(j₁), …, R_(j_(L₀))})if satisfies that the M CSI reports can be transmitted completely on anRE set

G(RE_(j₁), RE_(j₂), …, RE_(j_(L₀)))at a code rate of

min {C_(j₁), …, C_(j_(L₀))}so that

${\min\limits_{L,R_{i_{1}},\ldots,R_{i_{L}}}{N( {G( {{RE}_{i_{1}},{RE}_{i_{2}},\ldots,{RE}_{i_{L}}} )} )}},$then the CSI reports are transmitted on

N(G(RE_(j₁), RE_(j₂), …, RE_(j_(L₀)))at the code rate of

min {C_(j₁), …, C_(j_(L₀))},, where 1≤L≤J, i_(l)∈{1, . . . , J}, G(RE_(i) ₁ , RE_(i) ₂ , . . . ,RE_(i) _(L) ) denotes a union set of L RE sets, where an RE contained ina channel resource is selected on each time domain symbol contained inthe L RE sets (for example, an RE contained in a channel resource havinga maximum number of PRBs is selected on each time domain symbol) to formthe union set, and N(G(RE_(i) ₁ , RE_(i) ₂ , . . . , RE_(i) _(L) ))denotes the number of REs contained in the union set.

In step II-B, if the L0 resource channels satisfying the conditionscannot be found in step II-A, then L1 channel resources are selectedfrom {R1, . . . , RJ} and merged into a new channel, where an REcontained in one channel resource is selected on each time domain symbolcontained in L RE sets (for example, an RE contained in a channelresource having a maximum number of PRBs is selected on each time domainsymbol) to form an RE set contained in the new channel resource, so thatthe maximum number of transmittable bits is maximum in response totransmitting the CSI reports on REs contained in the new mergencechannel resource at a code rate which is the minimum one among maximumcode rates corresponding to the selected resources, and K CSI reports ofthe M CSI reports are reported. For example, in response to transmittingthe CSI reports on the mergence channel resource at the code rate whichis the minimum one among maximum code rates corresponding to the L1resources, if K satisfies that a total overhead of CSI{P1, . . . , PK}is less than or equal to the maximum number a0 of transmittable bitsafter the mergence and a total overhead of CSI{P1, . . . , PK+1} isgreater than O0, then CSI{P1, . . . , PK} are transmitted on themergence channel resource at the code rate which is the minimum oneamong maximum code rates corresponding to the L1 resources. For example,

{L, R_(i₁,)…, R_(i_(L))}({L, R_(i₁,)…, R_(i_(L))} = {L₁, R_(k₁), …, R_(k_(L₁))})satisfies

${\max\underset{L,{R_{i_{1},}\ldots},R_{i_{L}}}{}{O( {\underset{l = 1}{\bigcup\limits^{L}}{RE}_{i_{1}}} )}},$where O(G (RE_(i) ₁ , RE_(i) ₂ , . . . , RE_(i) _(L) )) denotes themaximum number of transmittable bits of G(RE_(i) ₁ , RE_(i) ₂ , . . . ,RE_(i) _(L) ) at a code rate of min{C_(i) ₁ , . . . , C_(i) _(L) }, thatis, O(U_(l=1) ^(L)RE_(i) ¹)∝N(U_(l=1) ^(L)RE_(i) ₁ )·min{C_(i) ₁ , . . ., C_(i) _(L) }; if K satisfies that a total overhead of CSI{P1, . . . ,PK} is less than or equal to the maximum number of

O(G(RE_(j₁), RE_(j₂), …, RE_(j_(L₁))))of transmittable bits after the mergence and a total overhead of CSI{P1,. . . , PK+1} is greater than

O(G(RE_(j₁), RE_(j₂), …, RE_(j_(L₁)))),, then CSI{P1, . . . , PK} is transmitted on

G(RE_(j₁), RE_(j₂), …, RE_(j_(L₁)))),at the code rate of

min {C_(k₁), …, C_(k_(L₁))}.

For the preceding manner II, a possible optimization is to define thatan RE set of each selected channel resource in includes at least onecolumn of DMRSs.

In the preceding manner I or manner II, if corresponding maximum numbersof bits are the same or minimum numbers of REs are the same, a channelresource having a lower resource ID is selected.

In the preceding manner II, the channel resource selected for themergence may be at least one of a periodic channel resource, asemi-persistent channel resource or an aperiodic channel resource.

Embodiment Six

This embodiment provides a specific implementation mode for processingspatial information corresponding to a channel resource during theselection of the channel resource in CSI feedback. In embodiment threeor embodiment five, the method of CSI feedback on multiple channelresources relates to a manner of merging multiple channel resources intoa new channel resource for transmitting CSI. For each channel resource,a terminal is configured with spatial information corresponding to eachchannel resource. It is necessary to solve the problem of how to processthe spatial information corresponding to the mergence channel resource.The preceding problem may be solved in at least one of the mannersdescribed below.

Manner 1: It is assumed that one or more channel resources configuredfor the terminal is configured to have the same spatial information onthe same OFDM symbol.

Manner 2: The terminal selects spatial information about one of themultiple channel resources before the mergence, and uses this spatialinformation as a spatial relationship of the mergence channel resource.For example, the spatial relationship of the mergence channel resourcemay be selected according to at least one of a channel format (forexample, a resource containing a maximum number of OFDM symbols ispreferably selected), a channel resource ID (for example, a resourcehaving the lowest or highest ID is selected), a corresponding code rate(for example, a resource having the lowest or highest code rate isselected), or the like.

Manner 3: The spatial information about multiple mergence channelresources includes the spatial information about the multiple channelresources before the mergence.

Manner 4: A mergence channel resource belonging to an overlapping partof the resources before the mergence is configured with spatialinformation about one of the mergence channel resources belonging to theoverlapping part of the resources before the mergence. For example, thespatial information may be selected according to at least one of achannel format (for example, a resource containing a maximum OFDMsymbols is preferably selected), a channel resource ID (for example, aresource having the lowest or highest ID is selected), or a code rate(for example, a resource having the lowest or highest code rate isselected). A channel resource out of the overlapping part of theresources before the mergence is configured with spatial informationcorresponding to a respective resource before the mergence.

Manner 5: During the mergence of the channel resources, only channelresources corresponding to the same spatial information are selected andmerged.

Embodiment Seven

FIG. 10 is a flowchart of a method for receiving a CSI report accordingto an embodiment of the present disclosure. As shown in FIG. 10, themethod includes steps S1002, S1004 and S1006.

In step S1002, a base station determines priorities of M CSI reports,where M is a natural number not less than 1.

In step S1004, an available channel resource is selected from a channelresource set for receiving the M CSI reports, where the channel resourceset includes J channel resources supporting reception of the M CSIreports and J is a natural number not less than 1.

In step S1006, the M CSI reports are received according to thepriorities by using the available channel resource.

It is to be noted that steps S1002 and S1004 may be performed in anoptional sequence. For example, step S1004 may be performed before stepS1002.

In an embodiment, step S1004 may be performed by selecting one channelresource from the J channel resources as the available channel resource.

For example, a channel resource occupying a minimum number of resourceelements (REs) in an optional channel resource set is used as theavailable channel resource. The optional channel resource set is asubset of the channel resource set.

For another example, a channel resource R corresponding to the maximumone among maximum numbers of transmittable bits in the channel resourceset is selected as the available channel resource.

For another example, if the M CSI reports are sequenced according to thepriorities from high to low, then first K CSI reports are transmittedbased on determining that a total overhead of first K CSI reports isless than or equal to the maximum number Ot of transmittable bits of theone channel resource and a total overhead of first K+1 CSI reports isgreater than Ot. K is a natural number not greater than M.

In an embodiment, step S1004 may further be performed such that: thebase station selects L channel resources from the J channel resources tomerge the L channel resources into a new channel resource, and the newchannel resource is used as the available channel resource. An RE setcontained in the new channel resource is a union set of RE setscorresponding to the L channel resources, or a subset of the union set.

For example, L0 channel resources are selected from the J channelresources, and the L0 channel resources are used as the availablechannel resource. The at least one CSI report is transmitted on theavailable channel resource containing a union set of RE setscorresponding to the L0 channel resources and at a maximum code ratewhich is the minimum one among maximum code rates corresponding to theL0 channel resources. L0 is a natural number not greater than J.

For another example, L1 channel resources are selected from the Jchannel resources as the available channel resource, an RE contained ina channel resource is selected on each time domain symbol contained inRE sets occupied by the L1 channel resources to form a first RE set, andthe CSI reports are transmitted on the first RE set at a maximum coderate which is the minimum one among maximum code rates corresponding tothe selected channel resources.

In an embodiment, collision exists between at least two channelresources in the channel resource set. The collision means that the atleast two channel resources contain at least one of the same time domainsymbol or the same frequency domain subcarrier.

In an application embodiment, the J channel resources are within thesame slot.

It is to be noted that for preferable implementation modes of thisembodiment, reference may be made to the related description inembodiments one to six, which is not repeated here.

Embodiment Eight

This embodiment of the present disclosure provides a device forreceiving a CSI report. The device is applied to a base station. FIG. 11is a structure block diagram of a device for receiving a CSI reportaccording to an embodiment of the present disclosure. As shown in FIG.11, the device includes a determination module 1102, a selection module1104 and a transmission module 1106.

The determination module 1102 is configured to determine priorities of MCSI reports, where M is a natural number not less than 1. The selectionmodule 1104 is configured to select an available channel resource from achannel resource set for receiving the M CSI reports, where the channelresource set includes J channel resources supporting reception of the MCSI reports and J is a natural number not less than 1. The transmissionmodule 1106 is configured to receive the CSI reports according to thepriorities by using the available channel resource.

In an embodiment, the determination module 1102 is further configuredsuch that collision exists between at least two channel resources in thechannel resource set. The collision means that the at least two channelresources contain at least one of the same time domain symbol or thesame frequency domain subcarrier.

It is to be noted that for implementation modes of this embodiment,reference may be made to the related description in embodiments one toseven, which is not repeated here.

Embodiment Nine

FIG. 12 is a flowchart of a method for determining a QCL parameteraccording to an embodiment of the present disclosure. As shown in FIG.12, the method includes steps S1202 and S1204 described below.

In step S1202, signaling information is received, or it is determinedwhether configuration information satisfies a predetermined constraintcondition.

In step S1204, an acquisition mode of a quasi-co-location (QCL)parameter of a signal is determined according to a determination resultor the signaling information.

In an embodiment, the acquisition mode includes at least a firstacquisition mode and a second acquisition mode.

In the first acquisition mode, an acquisition parameter of the QCLparameter of the signal does not include a relationship between apredetermined threshold and a transmission interval between the signaland physical-layer dynamic control signaling.

In the second acquisition mode, the acquisition parameter of the QCLparameter of the signal includes the relationship between thepredetermined threshold and the transmission interval between the signaland the physical-layer dynamic control signaling.

In an embodiment, the acquisition mode includes a third acquisition modeand a fourth acquisition mode. In each of the third acquisition mode andthe fourth acquisition mode, the acquisition parameter of the QCLparameter of the signal includes the relationship between thepredetermined threshold and the transmission interval between the signaland the physical-layer dynamic control signaling.

In the acquisition mode, the predetermined threshold includes a valueless than or equal to 0.

In the fourth acquisition mode, the predetermined threshold includes avalue greater than 0.

In an embodiment, the acquisition mode includes at least a fifthacquisition mode and a sixth acquisition mode.

In the fifth acquisition mode, the QCL parameter is acquired accordingto the physical-layer dynamic control signaling.

In the sixth acquisition mode, whether the QCL parameter of the signalis acquired according to the physical-layer dynamic control signaling oraccording to a QCL parameter having lowest control source setidentification (CORESETID) is determined according to the relationshipbetween the predetermined threshold and the transmission intervalbetween the signal and the physical-layer dynamic control signaling.

In an embodiment, the predetermined constraint condition includes atleast one of the following conditions: a carrier frequency where thesignal is located is less than a predetermined threshold.

A control resource set (CORESET) configured with a spatial Rx parameterdoes not exist in a CORESET set to be detected by a first communicationnode.

A CORESET configured with a spatial Rx parameter does not exist in aCORESET set associated with a dedicated search space to be detected bythe first communication node.

A time unit closest to the signal has a CORESET with the lowestCORESETID, but does not have the CORESET configured with a spatial Rxparameter.

A time domain symbol closest to the signal has the CORESET with thelowest CORESETID, and does not have the CORESET configured with aspatial Rx parameter.

In each TCI state in a tab control information (TCI) state poolassociated with the signal, a DL-RS set composed of down link-referencesignals (DL-RSs) associated with spatial Rx parameters is a null set.

In each state in the TCI state pool associated with the signal, theDL-RS set composed of DL-RSs associated with spatial Rx parametersincludes only one DL-RS.

In each TCI state in the TCI state pool associated with the signal, eachtwo DL-RSs in the DL-RS set composed of DL-RSs associated with spatialRx parameters satisfy a QCL relationship with respect to spatial Rxparameters.

In each TCI state in the TCI state pool associated with the signal,DL-RSs in the DL-RS set composed of DL-RSs associated with spatial Rxparameters can be simultaneously received by the first communicationnode.

In each TCI state in the TCI state pool associated with the signal, theDL-RSs in the DL-RS set composed of DL-RSs associated with spatial Rxparameters belong to a group.

In the case where in the same time domain symbol a spatial Rx parameterof a potential physical downlink shared channel (PDSCH) is differentfrom a spatial Rx parameter of a CSI-RS, the PDSCH and the CSI-RS arereceived by using the spatial Rx parameter of the potential PDSCH.

The signal is an access point-channel state information-reference signal(AP-CSI-RS).

Each candidate value K₀ of an interval that is configured byhigher-layer signaling and from a PDSCH to physical control signalingfor scheduling the PDSCH is greater than a predetermined threshold K.

The first communication node is a communication node receiving thesignal. The TCI state pool associated with the signal is a TCI statepool configured by radio resource control (RRC) signaling, or a TCIstate pool activated by medium access control-control element (MAC-CE)signaling.

In an embodiment, in response to satisfying the predetermined constraintcondition, the acquisition mode of the QCL parameter of the signal is aseventh acquisition mode; in response to not satisfying thepredetermined constraint conditions, the acquisition mode of the QCLparameter of the signal is an eighth acquisition mode. Details aredescribed below and not repeated here.

The signal includes at least one of a demodulation reference signal or ameasurement reference signal.

Embodiment Nine-1

In new radio (NR), in to the case where a transmission interval betweendownlink control information (DCI) and a PDSCH is less than apredetermined threshold K, a QCL parameter of a DMRS of the PDSCH isacquired through a QCL parameter of a CORESET having the lowestCORESETID in the closest slot, where K is undetermined. In response to Kis 0, the QCL parameter of the DMRS of the PDSCH is acquired accordingto information dynamically indicated in the DCI. This acquisition modeof the QCL parameter may be referred to as a seventh acquisition mode.In response to K is greater than 0, the QCL parameter of the DMRS of thePDSCH is acquired through the lowest CORESETID in a scenario where thetransmission interval between the DCI and the PDSCH is less than K, andthe QCL parameter of the DMRS of the PDSCH is acquired through dynamicindication in the DCI in a scenario where the transmission intervalbetween the DCI and the PDSCH is greater than or equal to K. Thisacquisition mode of the QCL parameter is referred to as the eighthacquisition mode.

The difference between the seventh acquisition mode and the eighthacquisition mode described above is whether the value of K can be 0, orwhether the acquisition parameter of the QCL parameter includes arelationship between the predetermined threshold K and the transmissioninterval between the DCI and the PDSCH.

Whether the QCL parameter of the DMRS of the PDSCH is acquired throughthe seventh acquisition mode or the eighth acquisition mode isdetermined according to constraint conditions 1 to 14 described below.

Constraint condition 1: A carrier frequency where a signal is located isless than a predetermined threshold. For example, if the carrierfrequency where the PDSCH is located is less than 6 GHz, that is, in alow-frequency scenario, a terminal omni-directionally receives, andthus, the seventh acquisition mode may be used.

Constraint condition 2: A CORESET configured with a spatial Rx parameterdoes not exist in a CORESET set to be detected by the terminal. In thiscase, reception beams of the terminal are determined according to anagreed rule, or the reception beams of the terminal areomni-directional, and thus, the seventh acquisition model may be used.

Constraint condition 3: The CORESET configured with a spatial Rxparameter does not exist in a CORESET set associated with a dedicatedsearch space to be detected by a first communication node, that is, in aCORESET set associated with a dedicated search space of the terminal. Inthis case, the reception beams of the terminal are determined accordingto an agreed rule, or the reception beams of the terminal areomni-directional, and thus, the seventh acquisition mode may be used.

Constraint condition 4: A time unit closest to the signal has a CORESETwith the lowest CORESETID, but does not have a CORESET configured with aspatial Rx parameter. In this case, the reception beams of the terminalare determined according to an agreed rule, or the reception beams ofthe terminal are omni-directional, and thus, the seventh acquisitionmode may be used.

Constraint condition 5: A time domain symbol closest to the signal hasthe CORESET with the lowest CORESETID, but does not have the CORESETconfigured with a spatial Rx parameter. In this case, the receptionbeams of the terminal are determined according to an agreed rule, or thereception beams of the terminal are omni-directional, and thus, theseventh acquisition mode may be used.

Constraint condition 6: In the case where the same time domain symbol aspatial Rx parameter of a potential PDSCH is different from a spatial Rxparameter of a CSI-RS, the PDSCH and the CSI-RS are received by usingthe spatial Rx parameter of the potential PDSCH. In this case, theterminal receives the PDSCH in the agreed manner. If the intervalbetween the DCI and an AP-CSI-RS is less than K, reception beams of thePDSCH are used, so data is cached through the reception beams of thePDSCH, so that other QCL parameters of the AP-CSI-RS may be acquiredthrough physical-layer dynamic control signaling, and thus, acquisitionmethod 7 may be used.

Constraint condition 7: In each TCI state in a TCI state pool associatedwith the signal, a DL-RS set composed of down link-reference signals(DL-RSs) associated with spatial Rx parameters is a null set. That is,there is not such a TCI state where QCL parameters associated with aDL-RS in this TCI state include a spatial Rx parameter.

Constraint condition 8: In each state in the TCI state pool associatedwith the signal, the DL-RS set composed of DL-RSs associated withspatial Rx parameters includes only one DL-RS. In this case, no matterwhich TCI is called by the DCI, reception beams to be used by theterminal may be determined according to the one DL-RS, so that QCLparameters of the DMRS of the PDSCH may be acquired through the seventhacquisition mode.

Constraint condition 9: In each TCI state in the TCI state poolassociated with the signal, each two DL-RSs in the DL-RS set composed ofDL-RSs associated with spatial Rx parameters satisfy a QCL relationshipwith respect to spatial Rx parameters. In this case, no matter which TCIis scheduled by a base station, the terminal can simultaneously transmitthese reception beams, and thus, the QCL parameter of the DMRS of thePDSCH may be acquired through the seventh acquisition mode.

Constraint condition 10: In each TCI state in the TCI state poolassociated with the signal, DL-RSs in the DL-RS set composed of DL-RSsassociated with spatial Rx parameters can be simultaneously received bythe first communication node.

Constraint condition 11: Each candidate value K₀ of an interval betweena PDSCH configured by higher-layer signaling and physical controlsignaling for scheduling the PDSCH is greater than a predeterminedthreshold K. In this case, a time domain position of the PDSCH may bejointly notified through the higher-layer signaling and physical-layerdynamic signaling. For example, the higher-layer signaling configuresmultiple time domain positions, and the dynamic signaling notifies aspecific time domain position, where each time domain positionconfigured by the higher-layer signaling includes the followinginformation: K₀, a position S of a time domain starting symbol, and aduration L of the PDSCH. K₀ denotes a slot n+K₀ where the PDSCH islocated, and slot n denotes a time domain symbol where the DCIscheduling the PDSCH is located. If each K₀ is greater than thepredetermined threshold K in the multiple time domain positionsconfigured by the higher-layer signaling, the beams of the PDSCH may beacquired according to a TCI domain indicated in the DCI, and thus, anaperiodic CSI-RS may also be directly acquired according to the beamsindicated in the DCI.

Constraint condition 12: The terminal reports information about acapability of a frequency range supported by the terminal. For example,if the terminal reports that the terminal does not support a frequencydomain range greater than 6 GHz through the capability, signals may bereceived by using omni-directional beams, and thus, the seventhacquisition mode may be used. For example, if the terminal capability isFR1 (frequency range 1), the first acquisition mode may be used.

Constraint condition 13: In each TCI state in the TCI state poolassociated with the signal, the DL-RSs in the DL-RS set composed ofDL-RSs associated with spatial Rx parameters belong to a group, andDL-RSs in this group can be simultaneously received by the terminal.

Constraint condition 14: In the case where the signal is the AP-CSI-RS,a QCL acquisition mode of the AP-CSI-RS is the seventh acquisition mode;if the signal is the DMRS of the PDSCH, the QCL parameter is acquired byusing the eighth acquisition mode.

The TCI state pool associated with the signal is a TCI state poolconfigured by RRC signaling, or a TCI state pool activated by MAC-CE.The TCI state pool activated by the MAC-CE is a TCI state poolassociated with a TCI indication domain of the DCI.

In the preceding modes, in the case where the signal is the AP-CSI-RS,the seventh acquisition mode is directly used. In another implementationmode of this embodiment, in the case where the signal is the AP-CSI-RS,whether the QCL parameter of the AP-CSI-RS is acquired through theseventh acquisition mode or the eighth acquisition mode is determinedaccording to whether at least one of the above constraint conditions 1to 13 is satisfied.

In another implementation mode of this embodiment, the terminal receivessignaling information, and the signaling information informs theterminal whether the QCL parameter of at least one of the DMRS of thePDSCH or the AP-CSI-RS is acquired through the seventh acquisition modeor the eighth acquisition mode. For example, in response to thesignaling information informing the terminal that the QCL parameter ofthe PDSCH/AP-CSI-RS is acquired through the seventh acquisition mode,the terminal directly uses the TCI notified in the DCI to acquire theQCL parameter; otherwise, the terminal acquires the QCL parameter of thePDSCH/AP-CSI-RS according to the relationship between the predeterminedthreshold K and the interval between the DCI and the PDSCH/AP-CSI-RS.For example, in the case where the interval between the DCI and thePDSCH/AP-CSI-RS is less than the predetermined threshold K, the QCLparameter of the PDSCH/AP-CSI-RS is acquired by using the QCL parameterconfiguration of the lowest CORESETID in the time unit/time domainsymbol closest to the PDSCH/AP-CSI-RS; in response to the intervalbetween the DCI and the PDSCH/AP-CSI-RS being greater than or equal tothe predetermined threshold K, the QCL parameter of the PDSCH/AP-CSI-RSis acquired by using the TCI information notified in the DCI.

Embodiment Nine-2

This embodiment of the present disclosure provides a method fordetermining a QCL parameter of an aperiodic measurement referencesignal. This embodiment includes that a communication device acquiresthe QCL parameter of the aperiodic measurement reference signal. Asshown in FIG. 13, the method includes steps S1302 and S1304.

In step S1302, dynamic control signaling is received.

In step S1304, the QCL parameter of the aperiodic measurement referencesignal is determined according to physical-layer dynamic controlsignaling.

The physical-layer dynamic control signaling includes configurationinformation about the QCL parameter of the aperiodic measurementreference signal.

In an embodiment, the configuration information configurationinformation about the QCL parameter of the aperiodic measurementreference signal satisfies at least one of the features described below.

In the case where an interval between the physical-layer dynamic controlsignaling and the aperiodic measurement reference signal is less than apredetermined threshold, a DL-RS, which with the aperiodic measurementreference signal satisfies a QCL relationship with respect to spatial Rxparameters, and a reference signal associated with the lowest CORESETIDsatisfies a QCL relationship with respect to Rx parameters.

In the case where the interval between the physical-layer dynamiccontrol signaling and the aperiodic measurement reference signal is lessthan the predetermined threshold, the DL-RS, which with the aperiodicmeasurement reference signal satisfies a QCL relationship with respectto spatial Rx parameters, and the reference signal associated with thelowest CORESETID can be simultaneously received by a first communicationnode.

In the case where the interval between the physical-layer dynamiccontrol signaling and the aperiodic measurement reference signal is lessthan the predetermined threshold, the DL-RS, which with the aperiodicmeasurement reference signal satisfies a QCL relationship with respectto spatial Rx parameters, is the reference signal associated with thelowest CORESETID.

In the case where the interval between the physical-layer dynamiccontrol signaling and the aperiodic measurement reference signal is lessthan the predetermined threshold, configuration information about theDL-RS, which with the aperiodic measurement reference signal satisfies aQCL relationship with respect to spatial Rx parameters, does not existsin configuration information about the aperiodic measurement referencesignal.

The reference signal associated with the lowest CORESETID is ademodulation reference signal of a CORESETID, or a downlink referencesignal which with a demodulation reference signal having the lowestCORESETID satisfies a QCL relationship with respect to Rx spatialparameters.

The first communication node is a communication node receiving themeasurement reference signal.

In an embodiment, in the case where the interval between thephysical-layer dynamic control signaling and the aperiodic measurementreference signal is less than the predetermined threshold, a QCLparameter other than the spatial Rx parameter of the aperiodicmeasurement reference signal is acquired through configurationinformation contained in the physical-layer dynamic control signaling;and/or the case where the interval between the physical-layer dynamiccontrol signaling and the aperiodic measurement reference signal is lessthan the predetermined threshold, the spatial Rx parameter of theaperiodic measurement reference signal is acquired through configurationabout a spatial Rx parameter having the lowest CORESETID.

In an embodiment, in the case where in the same time domain symbolspatial Rx parameter of the aperiodic measurement reference signal isdifferent from a spatial Rx parameter of a potential PDSCH, theaperiodic measurement reference signal is received by using the spatialRx parameter of the potential PDSCH.

In the case where in the same time domain symbol a spatial Rx parameterof the aperiodic measurement reference signal is different from aspatial Rx parameter of a PDSCH, the aperiodic measurement referencesignal is received by using the spatial Rx parameter of the PDSCH.

Each candidate value K₀ of an interval that is configured byhigher-layer signaling and from control signaling to the PDSCH isgreater than a predetermined threshold K. For example, each K₀ that isconfigured by the higher-layer signaling and from DCI to the PDSCH isgreater than the predetermined threshold K (in response to K₀ having adifferent unit than K, K₀*N is compared against K, where N is the numberof time domain symbols contained in a slot), and then, a spatial Rxparameter of the aperiodic measurement reference signal is acquiredthrough information notified in the DCI.

In an embodiment, the potential PDSCH satisfies at least one of thefeatures described below.

The potential PDSCH represents a PDSCH that falls in a predeterminedtime window after a CORESET to be detected by a terminal.

The potential PDSCH represents that an interval between the PDSCH andthe control signaling for scheduling the PDSCH is less than thepredetermined threshold.

The potential PDSCH represents a PDSCH that is able to fall in thepredetermined time window after the CORESET to be detected by theterminal.

The potential PDSCH represents a PDSCH that is able to fall in thepredetermined time window after the CORESET to be detected by theterminal and needs to be cached by the terminal.

In an embodiment, a CORESET with the lowest CORESETID satisfies at leastone of the features described below.

The CORESET with the lowest CORESETID is a CORESET with the lowestCORESETID in a time domain symbol closest to the aperiodic measurementreference signal.

Different time domain symbols of one aperiodic measurement referencesignal correspond to different CORESETs with lowest CORESETIDs.

Different measurement reference signal resources in one aperiodicmeasurement reference signal group correspond to different CORESETs withlowest CORESETIDs.

In an embodiment, as shown in FIG. 14, a CSI-RS resource occupies timedomain symbols {5, 6, 7, 8}, CORESET1 has the lowest CORESETID on timedomain symbol 5, CORESET2 has the lowest CORESETID on time domain symbol6, and CORESET3 has the lowest CORESETID on time domain symbol 8.Alternatively, CSI-RS resources {1, 2, 3, 4} occupy time domain symbols{5, 6, 7, 8} in FIG. 14, respectively, then, a spatial Rx parameter ofCSI-RS resource 1 is acquired according to a spatial Rx parameter ofCORESET1, a spatial Rx parameter of CSI-RS resource 2 is acquiredaccording to a spatial Rx parameter of CORESET2, a spatial Rx parameterof CSI-RS resource 3 is acquired according to a spatial Rx parameter ofCORESET3, and a spatial Rx parameter of CSI-RS resource 4 is acquiredaccording to a spatial Rx parameter of CORESET4.

Embodiment Ten

This embodiment provides a method for determining a sequence parameter.As shown in FIG. 15, the method includes steps S1502, S1504 and S1506.

In step S1502, information about a sequence parameter associated with areference signal is determined.

In step S1504, the reference signal is determined according to thedetermined information about the sequence parameter.

In step S1506, the reference signal is transmitted.

The term “transmission” includes, but is not limited to, at least one of“sending” or “reception”.

The sequence parameter is used for generating a sequence. The sequenceparameter hops once every X time domain symbols, where X is an integergreater than or equal to 1.

In an embodiment, in the case where the sequence is a Zadoff-Chusequence, the sequence parameter includes at least one of a sequencegroup number u, a sequence number v or sequence cyclic shiftinformation.

In an embodiment, the reference signal includes at least one of: ameasurement reference signal, a demodulation reference signal or acontrol channel frequency domain spreading sequence.

In an embodiment, X satisfies at least one of the following conditions:every X time domain symbols include the reference signal, X is less thanor equal to the length of an OCC of the reference signal, X isassociated with a set of time domain OCCs used by the reference signal,X is less than or equal to the number of time domain symbols occupied bythe reference signal in a time unit, X is less than or equal to thenumber of consecutive time domain symbols occupied by the referencesignal in the time unit, X is contained in physical-layer dynamiccontrol signaling, or X is jointly encoded with at least the time domainOCC of the reference signal.

In an embodiment, an acquisition parameter of at least one of thesequence group number u or the sequence number v includes a parameter y,where the parameter y is acquired according to one of followingformulas:y=l+l _(start);y=min( l )+l _(start);y=max( l )+l _(start);y=0; or

${y = {\lfloor \frac{l - l_{{start},i}}{X} \rfloor + l_{{start},i}}},{i = 1},2,\ldots,X_{{TD} - {OCC}},$where l_(start,i) denotes index information in the time unit about atime domain starting symbol corresponding to a group of time domain OCCsof the reference signal, X_(TD-OCC) denotes index information in thetime unit about a time domain symbol where the reference signal islocated, and l denotes the number of time domain OCCs of the referencesignal in the time unit.

l satisfies at least one of the following conditions: (i) l denotes theposition of a time domain starting symbol corresponding to the group oftime domain OCCs of the reference signal, or (ii) l is contained insignaling information, and l_(start) is equal to 0 or l denotes indexinformation in the time unit about a time domain starting symbol of achannel associated with the reference signal.

In an embodiment, the method satisfies at least one of the featuresdescribed below.

In the case where the channel associated with the reference signal is aPUSCH and a mapping mode of the PUSCH is Type A, l_(start) is equal to0; in the case where the channel associated with the reference signal isthe PUSCH and a mapping mode of the PUSCH is TypeB, l_(start), denotesindex information in the time unit about the position of a startingsymbol of the PUSCH, where the PUSCH includes a demodulation referencesignal of the PUSCH.

The sequence number u=(f_(gh)(n_(s,f) ^(u),y)+f_(ss))mod C.

f_(gh) (n_(s,f) ^(μ),y)=(Σ_(m=0) ^(D-1)c(D(n_(s,f) ^(μ)N_(symb)^(slot)+y)+m)·2^(m))mod C, where C denotes the total number of sequencegroup numbers, and D denotes a number greater than or equal to 8.

The sequence number v=c(n_(s,f) ^(μ)N_(symb) ^(slot)+y), where c(z)denotes the z-th value of a sequence generated by a random sequencefunction c(z), z is a non-negative integer, n_(s,f) ^(μ) denotes a slotnumber in a frame, N_(symb) ^(slot) denotes the number of time domainsymbols contained in a slot, f_(ss) is obtained through signalinginformation and an agreed formula, and u denotes interval informationabout subcarriers and is used for acquiring n_(s,f) ^(μ).

In an embodiment, the method satisfies at least one of the featuresdescribed below.

The sequence parameter remains constant on consecutive time domainsymbols occupied by the reference signal.

On the consecutive time domain symbols occupied by the reference signal,each sequence parameter is acquired according to index information abouta time domain starting symbol of the consecutive time domain symbols.

Whether the sequence group number is enabled to hop is associated with aset of time domain OCCs used by the reference signal.

Whether the sequence number is enabled to hop is associated with the setof time domain OCCs used by the reference signal.

In response to the number of consecutive time domain symbols occupied bythe reference signal being greater than 1, neither the sequence groupnumber nor the sequence number hops.

Embodiment Ten-1

In this embodiment, in response to enabling an uplink DFT (that is,enabling transforming precoding), an uplink DMRS uses a ZC (Zadoff-Chu)sequence (or referred to as a Lower-PAPR sequence); in response toconsecutive time domain symbols, a time domain OCC may be used. In thiscase, a DMRS reference signal a_(k,l) ^((p) ⁰ ^(,μ)) of an uplink portp₀ is obtained through the formulas described below.a _(k,l) ^((p) ^(i) ^(,μ))=β_(DMRS) r ^((p) ⁰ ⁾(m)k=4m+2k′+Δk′=0,1l=l+l′

In the preceding formulas:

${\begin{bmatrix}{r^{(p_{0})}(m)} \\ \vdots \\{r^{(p_{\rho - 1})}(m)}\end{bmatrix} = {W\begin{bmatrix}{{\overset{\sim}{r}}_{\lambda}^{({\overset{\sim}{p}}_{0})}(m)} \\ \vdots \\{{\overset{\sim}{r}}_{\lambda}^{({\overset{\sim}{p}}_{o - 1})}(m)}\end{bmatrix}}};\begin{matrix}{{{\overset{˜}{r}}^{({\overset{\sim}{p}}_{i})}(m)} = \{ \begin{matrix}{w_{f}{( k^{\prime} ) \cdot w_{t}}{( l^{\prime} ) \cdot \overset{¯}{r}}(n)} & {{if}{\overset{\sim}{p}}_{i}{is}{in}{CDM}{group}\lambda} \\0 & {otherwise}\end{matrix} } \\{m = {{2n} + k^{\prime}}}\end{matrix};{and}$

r(n)=r_(u,v) ^((+,δ))(n), where r_(u,v) ^((α,δ))(m) denotes the ZCsequence, δ=1, α=0, and W denotes a precoding matrix.

In the case where the PUSCH has mapping type A, l denotes an index of atime domain symbol relative to a starting position of a slot. In thecase where the PUSCH has mapping TypeB, l denotes an index of the timedomain symbol relative to a starting symbol of the PUSCH. l denotes theposition of a time domain starting symbol of a group of consecutive timedomain symbols of the DMRS, or l denotes the position of a time domainstarting symbol of a group of consecutive time domain symbols that is inthe DMRS and participates in a time domain OCC. l is acquired throughsignaling information with reference to Table 3 or Table 4. A, w_(f)(k′),w_(l) (k′) is acquired through the signaling information withreference to Table 1 or Table 2. l′ is acquired through the signalinginformation with reference to Table 5. In Table 3 and Table 4, l₀ isacquired through signaling information or a broadcast message.

TABLE 1 Parameters For PUSCH DM-RS Configuration Type 1 CDM w_(f) (k′)w_(t) (l′) {tilde over (p)} Group λ Δ k′ = 0 k′ = 1 l′ = 0 l′ = 1 0 0 0+1 +1 +1 +1 1 0 0 +1 −1 +1 +1 2 1 1 +1 +1 +1 +1 3 1 1 +1 −1 +1 +1 4 0 0+1 +1 +1 −1 5 0 0 +1 −1 +1 −1 6 1 1 +1 +1 +1 −1 7 1 1 +1 −1 +1 −1

TABLE 2 Parameters For PUSCH DM-RS Configuration Type 2 CDM w_(f) (k′)w_(t) (l′) {tilde over (p)} Group λ Δ k′ = 0 k′ = 1 l′ = 0 l′ = 1 0 0 0+1 +1 +1 +1 1 0 0 +1 −1 +1 +1 2 1 2 +1 +1 +1 +1 3 1 2 +1 −1 +1 +1 4 2 4+1 +1 +1 +1 5 2 4 +1 −1 +1 +1 6 0 0 +1 +1 +1 −1 7 0 0 +1 +1 +1 −1 8 1 2+1 +1 +1 −1 9 1 2 +1 −1 +1 −1 10  2 4 +1 +1 +1 −1 11  2 4 +1 −1 +1 −1

TABLE 3 PUSCH DM-RS Positions l For Single-symbol DM-RS PUSCH DM-RSPositions l Duration PUSCH Mapping Type A PUSCH Mapping Type B InUL-DMRS-add-pos UL-DMRS-add-pos Symbols 0 1 2 3 0 1 2 3 ≤7 l₀ — — — 0 0,4 — — 8 l₀ — — — 0 0, 6 0, 3, 6 — 9 l₀ l₀, 7 — — 0 0, 6 0, 3, 6 — 10 l₀l₀, 9 l₀, 6, 9 — 0 0, 8 0, 4, 8 0, 3, 6, 9 11 l₀ l₀, 9 l₀, 6, 9 — 0 0, 80, 4, 8 0, 3, 6, 9 12 l₀ l₀, 9 l₀, 6, 9 l₀, 5, 8, 11 0 0, 10 0, 5, 10 0,3, 6, 9 13 l₀ l₀, 11 l₀, 7, 11 l₀, 5, 8, 11 0 0, 10 0, 5, 10 0, 3, 6, 914 l₀ l₀, 11 l₀, 7, 11 l₀, 5, 8, 11 — — — —

TABLE 4 PUSCH DM-RS Positions l For Double-symbol DM-RS DM-RS Positionsl PUSCH PUSCH Mapping Type A PUSCH Mapping Type B Duration InUL-DMRS-add-pos UL-DMRS-add-pos Symbols 0 1 2 3 0 1 2 3 ≤7 l₀ — 0 — 8 l₀— 0 0, 5 9 l₀ — 0 0, 5 10 l₀ l₀, 8 0 0, 7 11 l₀ l₀, 8 0 0, 7 12 l₀ l₀, 80 0, 9 13 l₀ l₀, 10 0 14 l₀ l₀, 10 — —

TABLE 5 PUSCH DM-RS Time Index l′ Supported Antenna Ports pConfiguration Configuration DM-RS Duration l′ Type 1 Type 2Single-Symbol DM-RS 0 0-3 0-5  Double-Symbol DM-RS 0, 1 0-7 0-11

A group number u or a sequence number V of a ZC sequence may hop onceevery X time domain symbols so that the interference between intercellterminals is randomized. If the group number u or the sequence number Vhops once each time domain symbol, when then time domain OCC is enabled,if frequency domain resources occupied by DMRSs of two UEs overlap eachother, then the two users participating in the time domain OCC havedifferent ZC sequences, and thus, the sequences of the two users form apattern as

$\begin{bmatrix}a & b \\c & {- d}\end{bmatrix}$(where rows denote different users participating in the time domain OCCand columns denote two REs participating in the time domain OCC) andcannot be orthogonalized. Therefore, in the time domain OCC, thesequence group number u or the sequence number V needs to keep constant,thus forming a pattern as

$\begin{bmatrix}a & a \\c & {- c}\end{bmatrix}$so that the two users whose frequency domain resources overlap eachother may be orthogonalized through the time domain OCC. This can beimplemented through at least one of modes 1 to 6 described below.

Mode 1: A base station informs, through the signaling information, thatthe sequence group number or the sequence number hops once every X timedomain symbols. In an embodiment, the signaling information may bedynamic control information, and X is contained in the dynamic controlsignaling. For example, in the dynamic control signaling, X may bejointly encoded with at least one of the time domain OCC or a portnumber of the DMRS reference signal.

Mode 2: The base station and the terminal agree that: in response to theDMRS being the double-symbol pattern shown in Table 4, X=2 when thesequence group number or the sequence number is enabled to hop; inresponse to the DMRS being the single-symbol pattern shown in Table 3,X=1 when the sequence group number or the sequence number is enabled tohop. That is, X is equal to the number of consecutive time domainsymbols occupied by the demodulation reference signal.

Mode 3: The base station and the terminal agree that: in response to theDMRS being the double-symbol pattern shown in Table 4 and the timedomain OCC of the DMRS satisfying w_(t)(l′)=[1,−1], X=2 when thesequence group number or the sequence number is enabled to hop; inresponse to the time domain OCC of the DMRS satisfying w_(t)(l′)=[1,1],X may be 1 or 2 and be further obtained through signaling. In responseto X being 2, a hopping pattern of the sequence group number or sequencenumber is shown in FIG. 16, that is, the sequence group number u or thesequence number v hops once each 2 time domain symbols. In response to Xbeing 1, hops of the sequence group number or the sequence number areshown in FIG. 17, and u or v hops once each time domain symbol.

Mode 4: X is specified to be less than or equal to the number ofconsecutive time domain symbols occupied by the demodulation referencesignal.

Mode 5: X is specified to be equal to the number of time domain symbolsoccupied by the demodulation reference signal in a slot.

Mode 6: the sequence group number is acquired through the formula:u=(f_(gh)(n_(s,f) ^(u),y)+f_(ss))mod C, where f_(gh)(n_(s,f)^(μ),y)=(Σ_(m=0) ^(D-1)c(D(n_(s,f) ^(μ)N_(symb) ^(slot)+y)+m)·2^(m))modC; or the sequence number is acquired through the formula: v=c(n_(s,f)^(μ)N_(symb) ^(slot)+y), where y is obtained according to one of theformulas:y=l+l _(start);y=min( l )+l _(start),y=max( l )+l _(start);y=0;

${y = {\lfloor \frac{l - l_{{start},i}}{X} \rfloor + l_{{start},i}}},{i = 1},2,\ldots,X_{{TD} - {OCC}},{l_{{start},i};}$

f_(gh)(n_(s,f) ^(μ),y)=(Σ_(m=0) ^(D-1)c(D(n_(s,f) ^(μ))+m)·2^(m))mod C,where the sequence number v=c(n_(s,f) ^(μ)), for example, C is 30, and Dis 8.

In the case where the PUSCH has mapping type A, l_(start) is equal to 0.In the case where the PUSCH has mapping type B, l_(start) denotes anindex of the starting symbol of the PUSCH in the slot, X_(TD-OCC)denotes the number of TD-OCC time domain symbol sets of the DMRS in theslot, or the number of consecutive time domain symbol sets of the DMRSin the slot. As shown in FIG. 18, X_(TD-OCC) is 2 in slot n, X_(TD-OCC)is 1 in slot n+1, and l_(start,i) denotes an index of a time domainstarting symbol in a TD-OCC time domain symbol set, or an index of atime domain starting symbol in a consecutive time domain symbol set.

In an application embodiment, the base station informs, through thesignaling information, that the sequence group number or the sequencenumber hops through any one of the preceding modes.

An embodiment of the present disclosure further provides a storagemedium. The storage medium stores computer programs. The computerprograms are configured to, when executed, perform the steps in anymethod embodiment described above.

In an embodiment, the storage medium may be configured to store computerprograms for performing the method of any one of embodiments one to ten.

In an embodiment, the storage medium may include, but is not limited to,a USB flash disk, a read-only memory (ROM), a random access memory(RAM), a mobile hard disk, a magnetic disk, an optical disk or anothermedium capable of storing computer programs.

An embodiment of the present disclosure further provides an electronicdevice including a memory and a processor. The memory stores computerprograms. The processor is configured to execute the computer programsto perform the steps in any method embodiment of embodiments one to tendescribed above.

An embodiment of the present disclosure further provides a base station.The base station includes a processor and a communication module. Theprocessor is configured to determine priorities of M CSI reports, whereM is a natural number not less than 1, and select an available channelresource from a channel resource set for receiving the M CSI reports,where the channel resource set includes J channel resources supportingreception of the M CSI reports and J is a natural number not lessthan 1. The communication module is configured to receive the CSIreports according to the priorities by using the available channelresource.

In an embodiment, for specific examples in this embodiment, referencemay be made to the examples described in the embodiments and optionalimplementation modes described above, and repetition is not made in thisembodiment.

Apparently, those skilled in the art should know that each of theabove-mentioned modules or steps of the present disclosure may beimplemented by a general-purpose computing device, the modules or stepsmay be concentrated on a single computing device or distributed on anetwork formed by multiple computing devices, and in an embodiment, themodules or steps may be implemented by program codes executable by thecomputing devices, so that the modules or steps may be stored in astorage device and executed by the computing devices. In somecircumstances, the illustrated or described steps may be executed insequences different from those described herein, or the modules or stepsmay be made into various integrated circuit modules separately, ormultiple modules or steps therein may be made into a single integratedcircuit module for implementation. In this way, the present disclosureis not limited to any particular combination of hardware and software.

What is claimed is:
 1. A method for sending a channel state information(CSI) report, comprising: determining, by a terminal, priorities of MCSI reports, wherein M is a natural number not less than 1; selecting anavailable channel resource from a channel resource set for transmittingthe M CSI reports, wherein the channel resource set comprises J channelresources supporting transmission of the M CSI reports and J is anatural number not less than 1; and transmitting at least one CSI reportaccording to the priorities of the M CSI reports by using the availablechannel resource, wherein selecting the available channel resource fromthe channel resource set for transmitting the M CSI reports comprises:selecting one channel resource from the J channel resources as theavailable channel resource, sequencing the M CSI reports according tothe priorities, from high to low, of the M CSI reports, and transmittingfirst K CSI reports based on determining that a total overhead of thefirst K CSI reports is less than or equal to a maximum number Ot oftransmittable bits of the one channel resource and a total overhead offirst K+1 CSI reports is greater than Ot, wherein K is a natural numbernot greater than M.
 2. The method of claim 1, wherein selecting the onechannel resource from the J channel resources as the available channelresource comprises: using a channel resource occupying a minimum numberof REs in an optional channel resource set as the available channelresource, wherein the optional channel resource set is a subset of thechannel resource set.
 3. The method of claim 2, wherein using thechannel resource occupying the minimum number of REs in the optionalchannel resource set as the available channel resource is performedaccording to a following condition: a total overhead of the M CSIreports is less than a maximum number of transmittable bits of anychannel resource in the optional channel resource set.
 4. The method ofclaim 2, wherein before using the channel resource occupying a minimumnumber of REs in the optional channel resource set as the availablechannel resource, the method further comprises: repeating a followingoperation until a total overhead of the M CSI reports is less than amaximum number of transmittable bits of any channel resource in theoptional channel resource set: removing a channel resource whose maximumnumber of transmittable bits is minimum in the optional channel resourceset based on determining that a channel resource whose maximum number oftransmittable bits is less than the total overhead of the M CSI reportsexists in the optional channel resource set.
 5. The method of claim 4,wherein selecting the one channel resource from the J channel resourcesas the available channel resource comprises: selecting a channelresource R corresponding to a maximum one among maximum numbers oftransmittable bits in the channel resource set as the available channelresource.
 6. The method of claim 5, where selecting the channel resourceR as the available channel resource is performed according to afollowing condition: a total overhead of the M CSI reports is not lessthan the maximum one among maximum numbers of transmittable bits in thechannel resource set.
 7. The method of claim 5, wherein a maximum numberof transmittable bits of the one channel resource is determinedaccording to a maximum transmission code rate and a number of occupiedREs.
 8. The method of claim 7, wherein the maximum number oftransmittable bits satisfies at least one of following conditions: themaximum number of transmittable bits is a difference value between anumber of cyclic redundancy check (CRC) bits and a product of themaximum transmission code rate and the number of occupied REs, or themaximum number of transmittable bits is proportional to a product of themaximum transmission code rate and the number of occupied REs.
 9. Amethod for receiving a channel state information (CSI) report,comprising: determining, by a base station, priorities of M CSI reports,wherein M is a natural number not less than 1; selecting an availablechannel resource from a channel resource set for receiving the M CSIreports, wherein the channel resource set comprises J channel resourcessupporting reception of the M CSI reports and J is a natural number notless than 1; and receiving at least one CSI report according to thepriorities of the M CSI reports by using the available channel resource,wherein selecting the available channel resource from the channelresource set for receiving the M CSI reports comprises: selecting onechannel resource from the J channel resources as the available channelresource, sequencing the M CSI reports according to the priorities, fromhigh to low, of the M CSI reports, and transmitting first K CSI reportsbased on determining that a total overhead of the first K CSI reports isless than or equal to a maximum number Ot of transmittable bits of theone channel resource and a total overhead of first K+1 CSI reports isgreater than Ot, wherein K is a natural number not greater than M. 10.The method of claim 9, wherein selecting the one channel resource fromthe J channel resources as the available channel resource comprises:using a channel resource occupying a minimum number of resource elements(REs) in an optional channel resource set as the available channelresource, wherein the optional channel resource set is a subset of thechannel resource set.
 11. The method of claim 9, wherein selecting theone channel resource from the J channel resources as the availablechannel resource comprises: selecting a channel resource R correspondingto a maximum one among maximum numbers of transmittable bits in thechannel resource set as the available channel resource.
 12. The methodof claim 9, wherein selecting the available channel resource from thechannel resource set for receiving the M CSI reports comprises:selecting, by the base station, L channel resources from the J channelresources to merge the L channel resources into a new channel resource,and using the new channel resource as the available channel resource,wherein an RE set contained in the new channel resource is a union setof RE sets corresponding to the L channel resources, or a subset of theunion set.
 13. The method of claim 12, wherein selecting, by the basestation, the L channel resources from the J channel resources to mergethe L channel resources into the new channel resource comprises:selecting L0 channel resources from the J channel resources, and usingthe L0 channel resources as the available channel resource, wherein theat least one CSI report is transmitted on the available channel resourcecontaining a union set of RE sets corresponding to the L0 channelresources and at a maximum code rate which is a minimum one amongmaximum code rates corresponding to the L0 channel resources, wherein L0is a natural number not greater than J.
 14. The method of claim 12,wherein selecting, by the base station, the L channel resources from theJ channel resources to merge the L channel resources into the newchannel resource comprises: selecting L1 channel resources from the Jchannel resources as the available channel resource, wherein an REcontained in a channel resource is selected on each time domain symbolcontained in RE sets occupied by the L1 channel resources to form afirst RE set, and the CSI reports are transmitted on the first RE set ata maximum code rate which is a minimum one among maximum code ratescorresponding to the selected channel resources.
 15. A device forsending a channel state information (CSI) report, applied to a terminaland comprising: a processor and a memory storing processor-executableinstructions which, when executed by the processor, cause the processorto: determine priorities of M CSI reports, wherein M is a natural numbernot less than 1; select an available channel resource from a channelresource set for transmitting the M CSI reports, wherein the channelresource set comprises J channel resources supporting transmission ofthe M CSI reports and J is a natural number not less than 1; andtransmit at least one CSI report according to the priorities of the MCSI reports by using the available channel resource, wherein theprocessor-executable instructions which, when executed by the processor,cause the processor to select the available channel resource from thechannel resource set for transmitting the M CSI reports in the followingway: selecting one channel resource from the J channel resources as theavailable channel resource, sequencing the M CSI reports according tothe priorities, from high to low, of the M CSI reports, and transmittingfirst K CSI reports based on determining that a total overhead of thefirst K CSI reports is less than or equal to a maximum number Ot oftransmittable bits of the one channel resource and a total overhead offirst K+1 CSI reports is greater than Ot, wherein K is a natural numbernot greater than M.
 16. A device for receiving a channel stateinformation (CSI) report, applied to a base station and comprising: aprocessor and a memory, wherein the processor is configured to executeprograms stored in the memory to implement the method for receiving theCSI report of claim 9.